Which nutrient is most effective for providing energy during high-intensity workouts?

The most effective nutrient for providing energy during high-intensity workouts is simple carbohydrates. During intense physical activities, the body primarily relies on glucose as its energy source. Simple carbohydrates, which are quickly digested and absorbed, can rapidly increase blood glucose levels. This swift availability of energy is crucial during high-intensity efforts, as it supports immediate fueling of working muscles before they fatigue.

While proteins and fats also play important roles in overall nutrition and energy metabolism, they are not as readily available for quick bursts of energy. Proteins are primarily used for repair and growth rather than as an immediate energy source, and fats take longer to break down for energy compared to carbohydrates. Complex carbohydrates, while beneficial for overall energy sustainability, are digested more slowly and may not provide the immediate boost needed during high-intensity workouts like simple carbohydrates do.